<!DOCTYPE html>
<html xmlns:th="http://www.thymeleaf.org" lang="en">
<head>
    <meta charset="UTF-8">
    <title>登录页面</title>
</head>
<body>
    <h1>登录页面</h1>   
    <span style="color:red" th:text="${msg}"></span>
    <form method="post" action="login">
            <input type="text" name="username" /><br>
            <input type="password" name="password"><br>
            <input type="submit" name="submit" value="登录">
        </form> 
</body>
</html>